Improvement in device for conveying sawdust prom saws



.cimiteri f ,tzr/tre WILLIAM S. GOLWELL, 0F PITTSBURG, PENNSYLVANIA. l

Letters Patent No. 98,037, datedDece/mbcr 21, 1869.

The Schedule referred to in these Letters Patent and making part of the sameA Tf1-all whom 'it may concern Be itknowu that I, WILLIAM S. Oonwntt, of Pittsburg, in the county of Allegheny, and State of Pennsylvania, have invented a certain new and useful Device for Conveying Sawdust, Sec., from Saws, &c.; and I do hereby declare that the following is a full, clear, and exact description thereof, reference heilig had to the accompanyingdrawings,

- and to the letters of reference marked thereon.

' contact with the wings ot' the fan orblower.

lo enable others skilled inl the art"to make and use my invention, Iwill proceed to describe its construct-ion and operation. l

In the accompanying drawings, which. form part of my speciiication- Figure l is a front elevation of my improvementiu device for conveying sawdust, &c., from saws, 85o.

Figure 2 is an end elevation ofthe same.

Figure 3 is a transverse section of the same, when cut through at line y of tig. 2.

Figure 4 is a transverse section ot thel same, when cut through at line y of tig. '1.

In the accompanying drawings-- A represents the lase otl the fau or blower.

.l represents the trame for the-case. A

-m represents the. tim-shalt-,ou which are secured the fan a: and clearing-arms The wings o ot' the fan .rare curved, as shown in tigs. 1, 3, and le By thus curving the wingsl o, the suction and forcing power of the fan or -blower are greatly increased over the ordinary fan or blower.

The tan-chamber B is separated from the side or receiving-chambers A and U, by means of perforated partitions l, which may be made of heavy sheet-iron, provided with a large number of small perfolations, or they may bemade of net-work of small iron rods, or heavy wire. n

The ends of the case A are provided with openings, to which is connected a suitable conductor, for conveying the sawdust or other -refuse'from the saw or other machinery, into the chamber A, or into chambers A andfC.

To the dischargi11g-aperture c should be attached a suitable conductor, for conveying the sawdust or other retilse from the chambers A and C to the place desired.

`As -the construct-ion and arrangement ot' my improvement in der ice for conveying sawdust, 85e., from saws, die., will readily be understood from the foregoing description, and by reference tothe accompanying drawings, I will therefore proceed to describe its operation, which is as follows:

The sawdust or other refuse is drawn by the action ot' the fan a, through a suitable conductor, into the chambers A and C, and the action of the clearing- .arms s will force the sawdust or other mattei' from the chambers A and C, into the conductor attached to the discilarge-aperture e, and the tan :c will, by its tbrcing-actiou, drive. the sawdust through the conduetor'to the place desired.

lhe advantage ot' constructing a fau or blower with side chambers, and separating said chambers from the fan or blowing` and coinluct-ing-chamber, by means ot' perforated partitions, consists in the protection otthe i'an or blower from being brought in contact with chips, blocks, and other heavy matter, which would strip l the tan-wings, andendanger the persons or nos 0f those, who may bev working about or `near the fan or blower.

1 wish it clearly understood that I am aware that -faus and blowers have been used for conveying sawdust from saws, and refuse from cotton-machinery, 85e., therefore, I do not claim, broadly, a. fan or blower for the purposes herein specitied.

Having thus described the nature, construction, and operation ot' my improvement,

What I claim as of my invention, is

1. A conducting, forcing, or ventilatiug-tan or blower, provided with chan'lbers A, B, and C, fan T, and clearing-arms s, as hereiu'described.

2. The openings j, in the ends j" ot' the casing A', and partitions l, arranged with relation to the fan r and discharging-aperture e, substantially as herein described, and for the purpose set forth.

3. The'i'an x, provided with wings, curved, substantially as herein described and for the purpose ser forth.v

4e A tan or blower, provided with a chamber or chambers, separated by means of a perforated partition orpartitions from the fan or blower, or apparat-ns` used as the suction and forcing-medium, substantially as hereinbeibre described and forthe purpose set forth.

W. S. COLWELL. Witnesses:

J. J. J oHNs'roN, I. H. PHILLIPS. 

